Milling, gear-cutting, or similar machine.



No. 64.I,932. Patented Ian. 23, I900. F. BURGESS.

MILLING, GEAR CUTTING, 0R SIMILAR MACHINE.

(Application filed. Jan. 3, 1899.)

2 Sheets-Sheet I.

(No Model.)

\A/ITNEEEEE No. 641,932. Patented Jan. 23, I900.. F. BURGESS. MILLING, GEAR CUTTING, 0R SIMILAR MACHINE.

(Application filed Jam 3, 1899.) (No Model.) 2 Sheets$heet 2.

Fig.4.

WITNESSES UNITED STATES PATENT OFFICE.

FRANK BURGESS, OF BOSTON, MASSACHUSETTS.

MILLING, GEAR-CUTTING, CR SIMILAR MACHINE.

SPECIFICATION forming part of Letters Patent No. 641,932, dated January 23, 1900.

Application filed January 3, 1899- Serlal-No. 700,891. (No model.)

To all whom it may concern:

Be it known that I, FRANK BURGESS, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Attachments for Milling, Gear-Cutting, or Similar Machines, of which the following description, in connection with the accompany ing drawings, in a specification, like letters and figures on the drawings representinglike parts.

This invention has for its object the production of a novel attachment adapted to be applied to milling, gear-cutting, or like machines, my attachment being suitable for use in all milling-work, and especially all diffi-' ing two circular sets of bevel-teeth, one for.

engagement with each of said bevel-gears.

This connection or device may be made in the form of a ring having a depression at its cen ter,orit may and preferably will have an opening entirely through the center, thus making of the connection or device a ring,and one edge of this device has an annular flange or projec tion to enter a raceway in a suitable supporting-frame.

The cutter-carrying arbor is mounted in a circularly-adjustable bearing ring or frame, so that by changing its position in a circular plane with relation to the frame carrying the machine-arbor the tool or cutter carried by the cutter-carrying arbor may be placed at any angle with relation to the machine-arbor, according to the work which it is desired to perform on the machine.

The cutter-carrying arbor has its ends.

mounted in suitable boxes, and the millingoutter is applied to it centrally with relation to the length of said arbor, so that in all angular adjustment of said arbor the cutter will occupy a central position with relation to the actuating parts, so that no adjustments are required to place the milling-cutter and the work in proper working relation, as would be necessary if the cutter did not occupy this central position referred to.

' The cutter-carrying arbor may have a suitable tool or cutter applied to its end, and said tools may be either circular or of very small diameter or may be a drill or end mill.

It will be understood that by the use of the connection or device having two circular sets of bevel-teeth a working engagement is always maintained between the bevel-pinion on the machine-arbor and the bevel-pinion on the cutter-carrying arbor notwithstanding the position occupied by the circularlyadjustable bearingframe carrying the cuttercarrying arbor.

Figure l of the drawings shows my improvement applied to a well-known .part of one well-known form of ordinary plane milling-machine, some of the parts being broken out and othersbeing shown in section. Fig. 2 is a view of the parts represented in Fig. 1 looking in the direction of the arrow, Fig. 1. Fig. 3 is a section in the line 2, Fig. 1. Fig.

4 is a detail, partly in section, of the bearingring and parts supported thereby. Fig. 5 is a detail of one end of the cutter-carrying arbor with a different tool or cutter to be actuated by it.

. In the drawings, A represents a journal extended from the overhanging arm of an ordinary plane milling-machine, said arm being turned into circular form, and in practice the arm from which said journal projects also has bearings to sustain the machine-arbor B. The journal A receives over it the split hub A of a frame A the hub being confined to said arm by suitable clamping bolts o The lower part of the frame A presents a substantially circular base G, connected with arms (1, having strengthening-ribs ct. This base G is bored to receive the machinearbor B, and the lower side of the frame as I have herein chosen to illustrate it (see Fig. 1) is planed to leave an annular projection a To the under side of this frame A or its base G, I have connected in an adjustable manner by suitable adjusting devices, which may be made as headed bolts h, a bearing ring II, said ring having a series of slots h to provide for rotating the said ring more or less in its adj ustment,to be described,said ring resting on, as herein shown, suitable washers iat the heads of said bolts. The bearingring H is notched at its under side to receive suitable boxes 0, which are held in place by suitable bolts 7L3, and these boxes receive and sustain near their opposite ends the cuttercarrying arbor C, said arbor,supported at both ends, being rigidly sustained, so that it remains stiff and may be run without any liability of springing or jarring. The arbor C may be composed of a rod of very considerable diameter, as at O the said arbor being turned down, as herein represented, at opposite ends, leaving an endfto receive a bevelgear F, the said end entering one of said bearings, as at the right in Fig. 1. The opposite reduced end of said arbor is shown as having sunk in it a groove or key-seat to receive a keyf on which is slipped the milling-cutter D, it in the form represented in Figs. 1 to 4 being shown as circular and having a series of teeth. A collar (1 on said arbor meets the outer side of said milling-cutter, and said collar and the enlarged part C of the arbor support the opposite sides of the cutter, a nut 0, applied to a threaded part of said arbor, (see Fig. 1,) acting to clamp the cutter firmly in position. The opposite end of the said arbor enters the box or hearing at the left. (See Fig. 1.)

The machine-arbor is provided with a bevelgear B.

In the space between the two arbors I have located a connection or device E, provided at its upper and at its under sides with a circular series of bevel-teeth 2 3. The bevel-gear B engages the teeth 2 and rotates the connection or device E, while the teeth 3 of said connection or device engage with the bevel-gear F on the cutter-carrying arbor and rotate it. This connection or device has at its periphery, as herein shown, a radially-projecting flange which enters aspace or raceway made between the base Got the frame and the top of the adjustable bearing-ring H. I have shown this connection or device E in the form of a ring completely opened at its center, as by that construction it is possible to enable the acting edge of the cutter D to enter and turn in the central part of the ring, which insures a Very compact arrangement of parts; but my invention would not be departed from if the center of the ring were not entirely opened, for it will be obvious that the under side of the ring might have a concavity suflicient to receive a portion of the rotating cutter D.

By loosening the bolts h the bearing-ring may be turned in a circle parallel with the arbor B until the acting edge of the millingcutter D stands at any desired angle with relation to the machine-arbor, and during this adjustment the teeth of the bevel-gears F and 13 remain in engagement with the teeth of the connection or device E, whatever may be the position of the cutter-arbor, so that whenever the machine-arboris turned the cutting-arbor will be turned in unison with it and the cutter will act in its angular position to out whatever material may be placed under it.

The end of the cutter-carrying arbor may be provided with a cavity or socket to receive the shank of a tool m of any desired shape or kind, either a circular cutter or a drill or an end mill.

The base G and bearing-ring H may have a proper scale, as shown in Fig. 2, to indicate exactly the angular adjustment of the cutter carrying arbor and cutter with relation to the machine-arbor.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a machine of the class described, a cutter-carrying arbor, means to sustain it, and a cutter and bevel-gear carried thereby, a machine-arbor having a bevel-gear, a rotative connection or device intermediate said bevel-gears and having two circular sets of bevel-teeth, one for engagement with each of said bevel-gears and means for holding said intermediate connection or device against movementtransverselyof its path of rotation, substantially as described.

2. A frame having a machine-arbor provided with a bevel-gear, a bearing-ring, a cutter-carrying arbor mounted therein and provided with a bevel-gear, means to adjust said bearing-ring in a circular path, a connection or device intermediate said bevel-gears and having two circular sets of bevel-teeth, one for engagement with each of said bevel-gears and means for holding said intermediate connection or device against movement transversely of its path of rotation, substantially as described.

3. A frame having a machine-arbor provided with a bevel-gear, a bearing-ring, a cuttercarrying arbor mounted in said ring and provided with a bevel-gear, means to adjust said bearing-ringin a circular path, and a connection or device intermediate said bevelgears, said device being free to be rotated in a plane parallel with the said arbors and being held against movement transversely of the path of said connection or device, substan-' tially as described.

4. A frame having a machine-arbor provided with a bevel-gear, a bearing-ring, a cutter-carrying arbor mounted in said ring and provided with a bevel-gear, means to adjust said bearing-ring in a circular path, and a connection or device intermediate said bevelgears, said device being free to be rotated in a plane parallel with and between said arbors and being held against movement transversely of said plane, substantially as described.

5. A frame having a machine-arbor provided with a bevel-gear, a bearing-ring, a cutter-carrying arbor mounted therein and provided centrally between its ends with a cutter and having a bevel-gear, and a connection or device interposed between the said machine-arbor and cutter-carrying arbor and provided at its upper and under sides with a circular series or set of teeth, said teeth engaging said bevel-gears, said connection or device presenting at its center of rotation a space in which may move the cutter when in action, substantially as described.

6. A frame having a machine-arbor provided with a bevel-gear, a circularly-adjustable bearing-ring, a cutter-carrying arbor mounted in said ring and provided with a bevel-gear, and a cutter, an open-centered ring having two circular sets of bevel-teeth, one for engagement with each of said bevelgears, said ring rotating in a fixed horizontal plane between the said two arbors, substantially as described.

7. A frame having a machine-arbor provided with a bevel-gear, a bearing-ring circularly adjustable on or with relation to said frame, means to effect the adjustment of said ring on said frame, a cutter-carrying arbor mounted in said bearing-ring and provided with a bevel-gear and a cutter, combined with an open-centered ring having two circular sets of bevel-teeth, one for engagement with each of said bevel-gears, said ring having an annular flange to enter a raceway connected with the said frame, substantially as described.

8. A device of the class specified comprising two arbors, one of which is adjustable relatively to the other, an intermediate powertransmitting device peripherally supported, and driving and driven members cooperative respectively with said power-transmitting device, and connected with said arbors, and a tool carried by the adjustable arbor.

9. A device of the class specified, comprising two arbors, a peripherally supported power transmitting member, driving and driven elements cooperative with the powertransmitting member and connected with said arbors, a turning bearing for supporting one of the arbors, and a tool connected with that arbor which is supported by said turning member.

10. A device of the class specified, comprising two arbors, a tool carried by one of the arbors, a power-transmitting member having an opening to receive said tool, driving and driven elements cooperative with said powertransmitting member and connected with the respective arbors, and means for supporting the tool-carrying arbor for angular adjustment.

11. A device of the class specified, comprising two arbors, a rotary power-transmitting member, means for supporting the powertransmitting member beyond its axis of rotation, driving and driven elements connected with said arbors and cooperative with said power-transmitting member, a tool on one of 12. A device of the class specified, comprising two arbors, means for supporting said arbors in fixed parallel relation and one of them for angular movement relatively to the other, a bevel-gear having two sets of teeth, bevelgears secured to the respective arbors and meshing respectively with the sets of teeth on said first-mentioned bevel-gear, and a tool connected to the singularly-adjustable arbor and disposed within the area defined by said bevel-gear.

13. A device of the class specified, comprising two arbors, means for supporting the same in fixed parallel relation, and one of them for angular movement relatively to its companion, a rotative power-transmitting member supported beyond its axis of rotation and having a central opening, a tool connected to said angularly-adj ustable arbor, and disposed in said central opening.

14:. A device of the class specified, comprising a rotative arbor held in bearings against transverse movement, a bearing adapted to turn in a plane parallel with the axis of rotation of said arbor, a second arbor supported by said bearing and held therein in parallel relation with said first-mentioned arbor, and a power-transmitting device supported also by said bearing and operatively connected with said arbors for transmitting power from the first mentioned to the second mentioned.

15. A device of the class specified, comprising two arbors, means for supporting said arborsin fixed parallel relation, and one of them for angular adjustment in the plane of said support, a gear having sets of teeth upon its opposite faces, a pair of gears meshing with the respective sets of teeth and secured to said parallel arbors, and a tool carried by the angularly-adjustable arbor and disposed cen trally of the gear having two sets of teeth.

16. A device of the class specified, comprising two arbors, means for supporting said arbors in fixed parallel relation and one of them for rotative movement relatively to its companion, a power-transmitting member rotatively supported between and operatively connecting said arbors, and its path of rotation being parallel with the axes of said arbors, and a tool secured to the angularly-adjustable carrier and disposed within the periphery of said power-transmitting member.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK BURGESS.

W'itnesses:

GEO. W. GREGORY, EDITH STODDARD. 

